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Dali Jiang Jichang Zheng Zhijie Dan Zhuoyi Tang Qinghui Ai Kangsen Mai 《Aquaculture Research》2019,50(9):2350-2358
An experiment was conducted to evaluate the effects of five attractants on feed intake, growth performance and appetite‐regulating genes expression for juvenile turbot (Scophthalmus maximus L.). Fish were fed with seven diets: fish‐meal‐based diet (FM), fermented soybean meal replacing 45% fish meal (FSBM) and other diets with 1% compound attractant A (CA‐A) consisting of amino acids, compound attractant B (CA‐B) consisting of quaternary ammonium bases, compound attractant C (CA‐C) consisting of nucleotides, compound attractant G (CA‐G) consisting of the combination of CA‐A, CA‐B and CA‐C and blue mussel protein hydrolysate (BMH) on the basis of FSBM diet respectively. Daily feed intake in CA‐A group was significantly higher, but that in CA‐B group was significantly lower than FSBM group. Similarly, specific growth rate was significantly enhanced in CA‐A and CA‐G groups and were significantly decreased in CA‐B group. Protein efficiency ratio and protein retention in CA‐B group were significantly lower than FSBM group. Furthermore, BMH supplement increased the mRNA expression of Ghrelin in the intestine of fish. These results showed that CA‐A and CA‐G supplement could enhance growth in plant‐based diets, but CA‐B supplement had the opposite effect, which might be associated with lower feed intake and lower feed utilization. 相似文献
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Optimizing the Proportions of Plant Protein Ingredients in the Diet of Juvenile Blunt Snout Bream,Megalobrama amblycephala 下载免费PDF全文
Qun‐Lan Zhou Wei Yuan Liangkun Pan Bo Liu Mingchun Ren Linghong Miao Ajun Sun Xianping Ge 《Journal of the World Aquaculture Society》2018,49(3):504-515
An 8‐wk feeding trial was conducted to evaluate the influence of different proportions of dietary plant ingredients on the growth of juvenile blunt snout bream, Megalobrama amblycephala. A 2 × 3 factorial arrangement was set for this trial with three ratios of cottonseed meal (CSM) and canola meal (CM) (2:1, 1:1, or 1:2) and three proportions of soybean meal (SBM) (2, 1, or 0). The results showed that the specific growth rate and protein efficiency ratio both significantly decreased with decreasing amounts of SBM in the diets of blunt snout bream (P < 0.05), while the feed efficiency ratio and feed intake increased significantly (P < 0.05). Meanwhile, the growth performance and feed utilization were shown to improve with increasing amounts of CSM, although the effects were not significant (P > 0.05). The interaction of these two factors had no effect on either growth or feed utilization (P > 0.05). Diet composition was not seen to affect body composition (P > 0.05). The ratio of CSM to CM significantly affected gut amylase activity, liver alanine aminotransferase content, and plasma cholesterol levels (P < 0.05). The interaction between the two main effects significantly influenced the plasma glucose level (P < 0.05). Therefore, the suitable proportion of plant feed for blunt snout bream should include high levels of SBM and CSM, with a SBM : CSM : CM ratio of 2:2:1. 相似文献
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2013年8-10月,采用模拟采食法、群牧差额法、内外指示剂结合法在昭苏马场草甸草地上进行了放牧条件下乳用伊犁马采食量的测定。结果表明,1)同种测定方法不同月份之间测定的乳用伊犁马干物质采食量差异不显著(P0.05)。2)模拟采食法测得的干物质采食量为12.79 kg·15 h-1·匹-1,群牧差额法测得为16.39kg·d-1·匹-1,内外指示剂结合法测得为13.28 kg·d-1·匹-1。3)群牧差额法与内外指示剂结合法测定的乳用伊犁马干物质采食量之间差异不显著(P0.05),初步确定乳用伊犁马平均干物质采食量为14.83 kg·d-1·匹-1。 相似文献
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质量控制图在水产饲料氨基酸分析中的应用 总被引:1,自引:0,他引:1
通过对实验室自制标准物料-豆粕样品中氨基酸含量的多次测定,建立X-S质量控制图,开展水产饲料氨基酸分析日常质量控制。试验按照GB/T 18246-2000,通过微波水解-离子交换-柱后衍生-紫外检测法对豆粕样品氨基酸含量进行连续测定,并以FAPAS奶粉标准物质验证,利用偏度-峰度检验法对离群值进行判断,建立赖氨酸、甘氨酸、氨基酸总量质量控制图。结果显示,质量控制图中豆粕质控样赖氨酸、甘氨酸、氨基酸总量测定的RSD值均小于4%,FAPAS奶粉标准物质测定值落在参考范围内,建立的质量控制图能对日常氨基酸检测结果进行有效监控。结果表明,所建立氨基酸质量控制图直观有效,能对过程存在的异常因素起到预警作用,并可节约成本。 相似文献
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